# A153939 (b-file synthesized from sequence entry)
0 1
1 2
2 4
3 15
4 59
5 432
6 3332
7 48304
8 732710
9 20860338
10 622243455
11 34837075520
12 2043323102439
13 224967044124824
14 25947204334949263
15 5617471553259441802
16 1274053481965034919451
17 542391484462533633238628